Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents		$ 143,341	$ 267,512
Accounts receivable, net of allowances of $49,364 and $32,392, respectively		83,616	101,217
Inventories		168,192	171,012
Deferred tax assets, net			4,190
Income tax receivable		10,233	9,332
Other receivables		14,233	11,989
Prepaid expenses and other assets		26,334	30,156
Total current assets		445,949	595,408
Property and equipment, net		49,490	68,288
Intangible assets, net		82,297	97,337
Goodwill	[1]	1,973	2,044
Deferred tax assets, net		6,608	17,886
Other assets		21,703	25,968
Total assets		608,020	806,931
Current liabilities:
Accounts payable		63,336	42,923
Accrued expenses and other liabilities		91,835	80,216
Deferred tax liabilities, net			11,869
Accrued restructuring		738	4,511
Income taxes payable		6,416	9,078
Current portion of long-term borrowings and capital lease obligations	[2]	4,772	5,288
Total current liabilities		167,097	153,885
Long term income tax payable		4,547	8,843
Long-term borrowings and capital lease obligations	[2]	1,627	6,381
Long-term accrued restructuring		230	348
Other liabilities		12,890	12,277
Total liabilities		$ 186,391	$ 181,734
Commitments and contingencies
Series A convertible preferred stock, par value $0.001 per share, 1,000,000 shares authorized, 200,000 shares issued and outstanding, redemption amount and liquidation preference of $203,000 and $203,067 as of December 31, 2015 and December 31, 2014, respectively		$ 175,657	$ 172,679
Stockholders' equity:
Preferred stock, par value $0.001 per share, 4,000,000 shares authorized, none outstanding
Common stock, par value $0.001 per share, 250,000,000 shares authorized, 93,101,007 and 72,851,418 shares issued and outstanding, respectively, as of December 31, 2015 and 92,325,201 and 78,516,566 shares issued and outstanding, respectively, as of December 31, 2014		$ 94	$ 92
Treasury stock, at cost, 20,249,589 and 13,808,635 shares as of December 31, 2015 and December 31, 2014, respectively		(283,913)	(200,424)
Additional paid-in capital		353,241	345,732
Retained earnings		227,463	325,470
Accumulated other comprehensive loss		(50,913)	(18,352)
Total stockholders' equity		245,972	452,518
Total liabilities, commitments and contingencies and stockholders' equity		$ 608,020	$ 806,931

[1] Changes in core technology, goodwill, and indefinite lived intangible assets relate entirely to the impact of foreign currency translation.

[2] As the interest rate of each credit agreement is variable, typically based on the daily LIBOR rates plus an additional margin, the estimated fair value of each debt instrument approximates its carrying value.